Gallery Navigation

This might be a duplicate or already fixed. But I was not able to find any issue about this. so here goes.

I am missing something very important in the gallery: NAVIGATION
Navigation upwards,
Navigation downwards and,
Navigation sideways

There are pagers when a galley contains more images that what fits on a page. There is a menu item provided for the gallery. But that's it.

First of all a [<< previous] and [next >>] pagers for every image should be default. There are already several solutions for this. But why isn't this implemented by default? (http://drupal.org/node/61704, http://drupal.org/node/119052)

Second is a navigation in the hierarchy of the different gallaries. On a single image ther should be a link back to the parent gallery. And on the gallery page the same. All the way up and down in the hierarchy there should be a way to get back up one level. I and to compare this to the "up-one-level" button in win explorer. It might be the single most used button in the entire OS.

I would also like to see the hierarchy show up in the menu. If I have several galleries I want these to be submenu items to the image gallery menu-item. Much like the Taxonomy menu works. Why not build in support for this

I'm writing this because I really expected this to be the default. And now I see that to add these simple but necessary features I need modify the core files of this module. Which is some thing I want to avoid as much as possible.